Precipitating apparatus



(No Model.)

J. DAVIS. PREOIPITATING APPARATUS@ P atented May 9, 1893.

WWW/W@ %Meda 'may be employed, the fluid receptacle having acconpanyingdrawings, which, with the letsection through my improved apparatus. Fig.

PATENT FFICEe JOHN DAVIS, OF LARAMIE, W'YOMING.

PRECIPITATING APPARATU S.

SPECIFICATION forming part of Letters Patent No. 497,169, dated May 9,1893.

Application filed September 19, 1892. Serial No. 446622. (No model.)

To all whom it may concern:

Be' it known that I, JOHN DAVIS, a citizen of the United States,residing at Laramie, in the county of Albany, State of Wyoming, haveinvented certain new and useful Improvements in PrecipitatingApparat-us, of which the following is a specification, reference beinghad therein to the accompanying drawings.

This invention relates to certain new and usefulimprovements inprecipitating devices of that class in which two jacketed kettles ortanks or receptacles are disposed adjacent to each other, the one toprecipitate the semi-solid soda from the fluid, and the other toaccumulate the solid soda and thoroughly dry the same.

It has for itsobjects among others to economize in the treatment oftrona, or the natural deposits of sodium salts, so that the resultingproduct can be narketed at lower prices.

It has for a further object to so construct and arrange the parts thatthe liquid will be drained from the buckets as they gather the solidsoda from the precipitating tank or receptacle and thus materiallyhastening the drying process. I provide a jacketed tank to which heatmay be applied either directly or through the agency of steam, or awater jacket a conical bottom in which the raw material is deposited; atube being provided to carry off the liquid, and an endless belt withbuckets arranged to travel through the said receptacle, the bucketshaving an inclined bottom to facilitate the draining of the liquidtherefrom as they travel in their upward direction from the receptacle.

Other objects and advantages of the invention will hereinafter appearand the novel features thereof will be specifically defined by theappended claims.

The invention is clearly illustrated in .the

ters of reference marked thereon, form a part of this specification, andin which- Fgure l is a central vertical longitudinal 2 is a top planthereof.

Like letters of reference indicate like parts in both of the viewsReferring now to the details of the drawin gs by letter, A desi gnates ajacketed tank or receptacle upon which is supported the receptacle Bwhich has sloping sides and ends sloping toward the longitudinal center,as seen best in Fig. l. Any suitable means for heating this receptaclemay be employed; it may be heated by a furnace arranged beneath thesame, or by steam admitted through the pipe C adapted to be connectedwith any suitable source of steam and provided with a valve a wherebythe flow nay be regulated or shut off entirely When desired. I maysometimes provide a water receptacle or tank as indicated by dottedlinesin Fig. l; any of these or other means may be employed for heating.

The receptacle B is provided With an outlet tube B' for the discharge ofthe liquid or overfiow, and this pipe is preferably inclined downwardlyfrom its point ofjunction just below the upper edge of said receptacleas seen in Fig. 1 so that the buckets, as they travel along the bottomof the receptacle and up said forward inclined end; Will force theliquid into the mouth of said tube and any liquid that has been forcedup the incline by the preceding bucket will be caught by the next bucketas the liquid is falling back into the receptacle and thus be forced outof said discharge pipe as will be clearly understood from Fig. 1.

E are shafts suitably journaled on the side walls of the tank andcarrying the rollers F beneath which the endless band or belt G passes,the said band or belt traveling over the smaller rollers H carried byshafts suitably journaled on uprights H' at opposite ends of the tank asseen best in Fig. 1, the rollers F being upon a lower plane than therollers H and in a different vertical plane as seen in Fig. l to causethe belt or band to travel in a plane on its downward movement parallelwith the bottom of the receptacle as seen in said Fig. l.

I are buckets Secured to the outer face of the endless belt or band withtheir faces adjacent to the belt parallel therewith and their outerwalls inclined from the bottom of the bucket outward so that while inthe act of gathering the solid soda from the bottom of the receptaclethe liquid will run out of the buckets as will be readily understoodfrom Fig. 1.

J is a jacketed tank or receptacle arranged adjacent to the tank A andprovided with a receptacle L. M is a shaft suitably j ournaled thereonand carrying the radial blades M' spirally-arranged and designed torotate in the said receptacle.

The operation will be apparent; the material is placed in the receptacleB heat having been applied and as the solid soda is precipitated it isgathered up by the buckets on the endless belt or band to which motionis imparted in the direction of the arrow in any suitable manner; as thebuckets travel along 'the bottom of the receptacle B they gather u p thesolid soda, the liquid running out of the buckets; the solid matter iscarried by the bucketsup and deposited into the receptacle L as shown inFig. l and the blades M' rotating therein keep the soda thoroughlystirred, thus 'assisting the drying operation and insuring completeevaporation.

I operate upon the natural deposits the crystals of which contain aboutsiXty-five per cent. of water, and produce theref rom soda ata much lesscost than from other processes and Ialso produce a much purer article.

If desired I may em ploy a plurality of vats,

as I find that by running the liquid from the precipitating vat into asecond or third vat it produces better results.

What I claim as new is- 1. The combination with the jacketed tank withsloping walls supported upon the walls of the tank and jacket and havinginclined discharge, of the endless belt with its buckets and supportingrollers mounted to keep said belt upon its lower portion in parallelrelation with the bottom and sloping walls of the receptacle, theadjacent tank with its agitating means upon a lower plane than the upperrollers of the belt and means for heating said tank, as set forth.

2. The combination with the jacketed tank with sloping Walledreceptacle, and discharge pipe, of the endless belt with buckets havinginclined outer walls and the rollers over which said belt passes and issupported, said rollers being arranged to cause the belt to travel in aplane parallel with the bottom of the receptacle, and with its inclinedend walls as and for the purposes specified.

3. The combination with a receptacle having sloping walls and horizontalbottom, of the inclined discharge pipe communicating with saidreceptacle at the incline of one end at a point near the upper edgethereof and the endless belt with its buckets having inclined outerwalls and means for causing said buckets to travel in a plane parallelwith the horizontal bottom of the receptacle, and with the inclined endwalls thereof whereby said buckets engage the same from their entranceto the receptacle until they leave the same substantially as described.

In testimony whereof I aiii:: my signature in presence of two witnesses.

J OI IN DAVIS.

Witnesses:

WM. H. ROOT, F. W. CHAMPION.

